US138975A - Improvement in bush-hammers - Google Patents
Improvement in bush-hammers Download PDFInfo
- Publication number
- US138975A US138975A US138975DA US138975A US 138975 A US138975 A US 138975A US 138975D A US138975D A US 138975DA US 138975 A US138975 A US 138975A
- Authority
- US
- United States
- Prior art keywords
- bush
- hammers
- improvement
- worcester
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000002832 Shoulder Anatomy 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/44—Three or more members connected at single locus
Definitions
- WITNESSES AMPHOTO-UTHUGRAPHIC 00. Mm'oseamvals Pnocsss) UNITED STATES EDWARD J. WORCESTER, OF WORCESTER, MASSACHUSETTS.
- Figure 1 of the drawing is a representation of the bar of iron as pressed.
- Fig. 2 is a perspective view of my bush-hammer.
- Fig. 3 is a sectional view of the same.
- My invention relates to certain improvements in the manufacture of bush-hammers used in stone-dressing and it consists in a bar from which are cut the two sections composing the bit-holders, said bar being formed by rolling and planing instead of forging by trip-hammer or drop-hammer, as heretofore.
- A represents a bar of iron which has been prepared and finished according to my improved process, ready to be cut into sections.
- the bars are first passed between the proper rollers a suitable number of times to upset the metal suflieiently and give the bars something of the required form. They are then placed in the planer and fin-- ished and dressed to the exact shape and dimensions requiredfthat is to say, one surface of the bar has each side rounded as shown at a, and on the opposite surface is formed a central longitudinal groove, 1), with a square shoulder, c, on each side.
- the bars are finished and dressed they are out by a milling machine into pieces of the required width to form the sections B of the hammer.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Finger-Pressure Massage (AREA)
Description
.E. .l. WORCESTER.
Bush Hammers.
Patented Ma 13,1873.
WITNESSES AMPHOTO-UTHUGRAPHIC 00. Mm'oseamvals Pnocsss) UNITED STATES EDWARD J. WORCESTER, OF WORCESTER, MASSACHUSETTS.
IMPROVEMENT IN BUSH-HAMMERS.
Specification forming part of Letters Patent No. 138,975, dated May 13, 1873; application filed March 1, 1873.
To all whom it may concern:
Be it known that I, Enw. J. WORCESTER, of Worcester, in the county of Worcester and State of Massachusetts, have invented a new and valuable Improvement in Bush-Hammers, and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.
Figure 1 of the drawing is a representation of the bar of iron as pressed. Fig. 2 is a perspective view of my bush-hammer. Fig. 3 is a sectional view of the same.
My invention relates to certain improvements in the manufacture of bush-hammers used in stone-dressing and it consists in a bar from which are cut the two sections composing the bit-holders, said bar being formed by rolling and planing instead of forging by trip-hammer or drop-hammer, as heretofore.
In the drawing, A represents a bar of iron which has been prepared and finished according to my improved process, ready to be cut into sections. The bars are first passed between the proper rollers a suitable number of times to upset the metal suflieiently and give the bars something of the required form. They are then placed in the planer and fin-- ished and dressed to the exact shape and dimensions requiredfthat is to say, one surface of the bar has each side rounded as shown at a, and on the opposite surface is formed a central longitudinal groove, 1), with a square shoulder, c, on each side. When the bars are finished and dressed they are out by a milling machine into pieces of the required width to form the sections B of the hammer. When the sections are placed together, as shown in Figs.'2 and 3, the grooves b form the eye for the handle, and the space between the shoulders 0 forms the recess for the bits D, which are placed in position with the gibs G at their bases, and the parts secured by'screw-bolts E in the usual manner.
What I claim as new, and desire to secure by Letters Patent, isx In the manufacture of bush -hammers, :a bar formed by rolling and planing, from which the hammer sections may be cut, substantially as shown and described.
In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.
EDWARD J. WORCESTER.
Witnesses PATRICK DONAHER, WARREN ALLns.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US138975A true US138975A (en) | 1873-05-13 |
Family
ID=2208389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US138975D Expired - Lifetime US138975A (en) | Improvement in bush-hammers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US138975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090315470A1 (en) * | 2006-08-23 | 2009-12-24 | Panasonic Electric Works Co., Ltd. | High-pressure discharge lamp lighting device and lighting fixture using the same |
-
0
- US US138975D patent/US138975A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090315470A1 (en) * | 2006-08-23 | 2009-12-24 | Panasonic Electric Works Co., Ltd. | High-pressure discharge lamp lighting device and lighting fixture using the same |
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